Dec 1, 2004 — Munkres §17. Ex. 17.3. A × B is closed because its complement. (X × Y ) − (A × B)=(X − A) × Y ∪ X × (Y − B) is open in the product topology.
DOWNLOAD: https://byltly.com/2fb6vv
DOWNLOAD: https://byltly.com/2fb6vv
Solucionario Topologia Munkres Pdf
939c2ea5af
Comentários